On a server's
authorized_keys file, an ssh key is preceded by a specific command to prevent users to run any other command:
command="/bin/restricted_shell" ssh-rsa AAA....
It is often recommended to add the
no-X11-forwarding restriction when using command.
As the restriction is not present - and
X11Forwarding is allowed - is it possible to execute for instance an
xterm session instead of the restricted command?